// Override method Start
public void modifiedField(fieldId _fieldId)
{
    ;
    super(_fieldId);


// Override method End


    switch (_fieldId)
    {
        // AddressZipCode = Current TableName
        // CountryRegionId = Field Name @ Current Table

        case fieldnum(AddressZipCode,CountryRegionId) :

        
        // TimeZone = Field Name @ Current Table
        // AddressCountryRegion = Related Table 1
        // CountryRegionId = Related Field Between Two Tables
        // TimeZone = Modified Field @ current Table


        this.TimeZone = AddressCountryRegion::find(this.CountryRegionId).TimeZone;
        break;

 
        // AddressZipCode = Current TableName
        // State = Field Name @ Current Table

        case fieldnum(AddressZipCode,State) :



        // TimeZone = Field Name @ Current Table
        // AddressState = Related Table 1
        // CountryRegionId = Related Field Between Two Tables
        // TimeZone = Modified Field @ current Table

        this.TimeZone = AddressState::find(this.CountryRegionId, this.State).TimeZone;
        break;
    }
}